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Finding the Fourth Proportional to 421,466.04, 581,234.94 and 276,218.92

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Solution

The fourth proportional to 421,466.04, 581,234.94 and 276,218.92 is: 380,927.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,466.04 : 581,234.94 = 276,218.92 : x
  2. Step 2: Convert to fraction form
    421,466.04/581,234.94 = 276,218.92/x
  3. Step 3: Cross multiply
    421,466.04x = 581,234.94 × 276,218.92
  4. Step 4: Simplify right side
    421,466.04x = 160,548,084,486.89
  5. Step 5: Solve for x
    x = 160,548,084,486.89/421,466.04
  6. Step 6: Final answer
    x = 380,927.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.